package com.hmdp.interceptor;

import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import com.hmdp.utils.UserHolder;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.LOGIN_USER_KEY;
import static com.hmdp.utils.RedisConstants.LOGIN_USER_TTL;

public class RefreshInterceptor implements HandlerInterceptor {

    private StringRedisTemplate stringRedisTemplate;
    public RefreshInterceptor(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String token = request.getHeader("authorization");

        if (StrUtil.isBlank(token)) {
            return true;
        }
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(LOGIN_USER_KEY + token);
//        UserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(), false);
        if(userMap.isEmpty()){
            return true;
        }
        UserDTO userDTO = UserDTO.builder().id(Long.parseLong(userMap.get("id").toString()))
                .nickName(userMap.get("nickName").toString())
                .icon(userMap.get("icon").toString()).build();
        //存在保存到ThreadLocal 中返回true
        UserHolder.saveUser(userDTO);

        //刷新token有效期
        stringRedisTemplate.expire(LOGIN_USER_KEY + token,LOGIN_USER_TTL, TimeUnit.MINUTES);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
    }


}
